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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Custom binding for the contextMenus API. | |
6 | |
7 var binding = require('binding').Binding.create('contextMenus'); | |
8 | |
9 var contextMenuNatives = requireNative('context_menus'); | |
10 var sendRequest = require('sendRequest').sendRequest; | |
11 var Event = require('event_bindings').Event; | |
12 | |
13 binding.registerCustomHook(function(bindingsAPI) { | |
14 var apiFunctions = bindingsAPI.apiFunctions; | |
15 | |
16 var contextMenus = {}; | |
17 contextMenus.generatedIdHandlers = {}; | |
18 contextMenus.stringIdHandlers = {}; | |
19 var eventName = 'contextMenus'; | |
20 contextMenus.event = new Event(eventName); | |
21 contextMenus.getIdFromCreateProperties = function(prop) { | |
22 if (typeof(prop.id) !== 'undefined') | |
23 return prop.id; | |
24 return prop.generatedId; | |
25 }; | |
26 contextMenus.handlersForId = function(id) { | |
27 if (typeof(id) === 'number') | |
28 return contextMenus.generatedIdHandlers; | |
29 return contextMenus.stringIdHandlers; | |
30 }; | |
31 contextMenus.ensureListenerSetup = function() { | |
32 if (contextMenus.listening) { | |
33 return; | |
34 } | |
35 contextMenus.listening = true; | |
36 contextMenus.event.addListener(function() { | |
37 // An extension context menu item has been clicked on - fire the onclick | |
38 // if there is one. | |
39 var id = arguments[0].menuItemId; | |
40 var onclick = contextMenus.handlersForId(id)[id]; | |
41 if (onclick) { | |
42 $Function.apply(onclick, null, arguments); | |
43 } | |
44 }); | |
45 }; | |
46 | |
47 apiFunctions.setHandleRequest('create', function() { | |
48 var args = arguments; | |
49 var id = contextMenuNatives.GetNextContextMenuId(); | |
50 args[0].generatedId = id; | |
51 var optArgs = { | |
52 customCallback: this.customCallback, | |
53 }; | |
54 sendRequest(this.name, args, this.definition.parameters, optArgs); | |
55 return contextMenus.getIdFromCreateProperties(args[0]); | |
56 }); | |
57 | |
58 apiFunctions.setCustomCallback('create', function(name, request, response) { | |
59 if (chrome.runtime.lastError) { | |
60 return; | |
61 } | |
62 | |
63 var id = contextMenus.getIdFromCreateProperties(request.args[0]); | |
64 | |
65 // Set up the onclick handler if we were passed one in the request. | |
66 var onclick = request.args.length ? request.args[0].onclick : null; | |
67 if (onclick) { | |
68 contextMenus.ensureListenerSetup(); | |
69 contextMenus.handlersForId(id)[id] = onclick; | |
70 } | |
71 }); | |
72 | |
73 apiFunctions.setCustomCallback('remove', function(name, request, response) { | |
74 if (chrome.runtime.lastError) { | |
75 return; | |
76 } | |
77 var id = request.args[0]; | |
78 delete contextMenus.handlersForId(id)[id]; | |
79 }); | |
80 | |
81 apiFunctions.setCustomCallback('update', function(name, request, response) { | |
82 if (chrome.runtime.lastError) { | |
83 return; | |
84 } | |
85 var id = request.args[0]; | |
86 if (request.args[1].onclick) { | |
87 contextMenus.handlersForId(id)[id] = request.args[1].onclick; | |
88 } | |
89 }); | |
90 | |
91 apiFunctions.setCustomCallback('removeAll', | |
92 function(name, request, response) { | |
93 if (chrome.runtime.lastError) { | |
94 return; | |
95 } | |
96 contextMenus.generatedIdHandlers = {}; | |
97 contextMenus.stringIdHandlers = {}; | |
98 }); | |
99 }); | |
100 | |
101 exports.binding = binding.generate(); | |
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